Client
Karan Buttar
Sector
Commercial
Location
Sargeant Court, UK
Karan Butter Two Tower Home Solar Panel Installation in London
Delivered ~33,500 kWh of Clean Power for 45% Landlord Supply Self-Sufficiency Across Two Towers
Karan Buttar, a London property owner, transformed two residential towers with the help of dual 15.23 kWp solar PV systems. Both projects help cut annual landlord supply costs by up to £6,600 and offset ~16,800 kg CO₂ each year.
£165K
Lifetime client savings
30.46 KW
System Size installed
420K Kg
Co2 Saved
70
Panels installed
Financial Impact
Lifetime energy savings
£165,000
Pounds
System Cost
£28,800
Pounds
Estimated ROI
6 – 8
Years
Average annual savings
£6,600
Pounds
Average monthly savings
£550
Pounds
Average weekly savings
£130
Pounds
Energy
production
Annual Energy Generation
33,500
kWh
Specific Yield
1,100
kWh / kWp
Self Sufficiency
45%
Years
Environmental
Impact
Lifetime Carbon Offset
420,000
kg CO2
Equivalent trees planted
18,000
Average Carbon offset Yearly
16,800
kg CO2
Brands installed
Solar Panels
Jinko
Inverter
Solis
CLIENT
Being a landlord in London can be a financial nightmare when it comes to energy bills. For Karan Butter, saving on energy bills and being eco-friendly was a double-edged sword. Like many landlords who are always looking into the future, he wanted to kill two birds with one stone by creating modern, energy-efficient homes for his tenants while also improving the long-term value of his investment. This led him to choose solar as a way forward, and we were delighted to help.
The Project
The vision was to simply replicate a high-performing solar solution across both Tower A (33 flats) and Tower B (31 flats). Each system was thoughtfully designed to maximise south-facing exposure and provide consistent solar generation year in and year out. By choosing a dual installation, Karan doubled the impact, which then helped secure reliable returns, demonstrating that large-scale residential buildings can play their part in reducing carbon emissions.
The technical scope included:
- 70 × Jinko 435W panels (30.46 kWp total capacity across both towers)
- 2 × Solis 15kW 3-Phase Inverters
- Flat Roof Pitch: 10° (South Facing, both towers)
- Project Cost: £28,800 combined (£14,400 per tower)
The Solution
The Result
Energy Performance
- Annual Energy Generation (Combined): ~33,500 kWh
- Specific Yield: ~1,100 kWh/kWp
- Landlord Supply Offset: ~45%
Environmental Impact
- Annual CO₂ Savings (Combined): ~16,800 kg
- Lifetime Carbon Offset (25 years): ~420,000 kg
- Equivalent to Planting: ~18,000 trees
Financial Impact
- Lifetime Energy Savings: £150,000 – £165,000
- Annual Bill Reduction (Combined): ~£6,000 – £6,600
- Monthly Savings: ~£500 – £550
- Weekly Savings: ~£120 – £130
- Payback Period (ROI): 6 – 8 years
Client Benefits:
- Two towers now proudly part of the energy-efficient home movement
- Reliable south-facing design delivering consistent solar generation
- Strong safeguard against rising UK electricity costs
- ~420 tonnes of CO₂ avoided over the system’s lifetime
- Lifetime carbon savings equal to planting ~18,000 trees
- A high-quality upgrade that delivers financial savings, sustainability, and increased property value